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Fig. 1. Body swim-posture changes during flounder metamorphosis as one eye migrates
to the opposite side of the head. (A) Early pre-metamorphosis, 12 d.p.f.; (B)
no eye migration or sustained lateral tilt; late pre-metamorphosis, 16 d.p.f.;
no eye migration, but swims with sustained 3-6° right tilt; (C)
pro-metamorphosis, 20 d.p.f.; start of right eye migration, swims with
sustained 10-15° right tilt; (D) early metamorphic climax, 24 d.p.f.;
right eye has migrated half-way to the dorsal mid-line, swims with a sustained
17-22° right tilt; (E) late metamorphic climax, 26 d.p.f.; right eye close
to dorsal mid-line, swims with sustained 50-70° right tilt; (F)
post-metamorphic juvenile, 30 d.p.f.; right eye has migrated to dorsal
mid-line, swims with 80-90° right tilt; (G) settled sub-adult, 120 d.p.f.;
right eye (r) is now on the left side of the head and adjacent to the left eye
(l), which is now in a more ventral position than in stage I. Arrow in G
denotes position of mouth. Bars, 0.2 mm (A-F) and 0.5 cm (G).
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